United Kingdom, June 5 -- Chris Hemsworth was stopped from boarding an international flight after he packed the wrong passport for one of his children.

The Avengers: Doomsday actor - who has daughter India, 13, and twin sons Sasha and Tristan, 11, with wife Elsa Pataky - tried to sneak one of the boys onto a plane by insisting documents bearing his sister's image were actually his, but officials quickly spotted the error.

Speaking to Harper's Bazaar Arabia in a clip shared to the magazine's Instagram account, Chris admitted: "I actually went to the airport once and I had my daughter's passport instead of my son's passport. They kind of look the same."

Elsa cut in: "They don't."

Chris continued: "I said, 'Oh, yeah, this is her.' And th...